What is now-sdk-ext-mcp CLAUDE.md?

Project instructions for a TypeScript MCP server that lets AI assistants interact with ServiceNow, an enterprise platform for managing IT and business workflows.

Use them when developing or maintaining the server, including tools for scripts, data queries, automated tests, and logs.

They explain the project's structure, authentication, connection handling, and available ServiceNow operations so contributors can work in the codebase consistently.

How sonisoft-cnanda/now-sdk-ext-mcp configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to sonisoft-cnanda/now-sdk-ext-mcp. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/sonisoft-cnanda/now-sdk-ext-mcp/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/sonisoft-cnanda/now-sdk-ext-mcp

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/sonisoft-cnanda/now-sdk-ext-mcp/claude-md/github.svg)](https://agentmods.dev/instructions/sonisoft-cnanda/now-sdk-ext-mcp/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/sonisoft-cnanda/now-sdk-ext-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/sonisoft-cnanda/now-sdk-ext-mcp/claude-md/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/sonisoft-cnanda/now-sdk-ext-mcp/claude-md"><img src="https://agentmods.dev/badge/instructions/sonisoft-cnanda/now-sdk-ext-mcp/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,236 This file is loaded in full into every session.

When invoked 2,236 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.02236	$0.02236
Opus 5.5	$0.00894	$0.00894
Sonnet 5.5	$0.00447	$0.00447
Haiku 4.5	$0.00224	$0.00224

Measured 2mo ago against content hash 16a3057fd935, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

now-sdk-ext-mcp CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 149 lines

How it starts

The opening of the file, as written. The whole thing — 149 lines — stays where its author put it; the contents beside it link to each section on GitHub.

now-sdk-ext-mcp

MCP (Model Context Protocol) server that wraps @sonisoft/now-sdk-ext-core to enable AI systems (Claude, etc.) to interact directly with ServiceNow instances.

Project Overview

This is a TypeScript MCP server built on @modelcontextprotocol/sdk (v1.x). It exposes ServiceNow operations as MCP tools that AI assistants can invoke — executing background scripts, querying data, running ATF tests, tailing logs, and more.

Architecture

Framework: @modelcontextprotocol/sdk v1.x (official MCP TypeScript SDK)
Core Library: @sonisoft/now-sdk-ext-core v5.0.1 — provides all ServiceNow communication (auth, HTTP, WebSocket, script execution, ATF, syslog, etc.)
Transport: stdio (standard for local MCP servers used by Claude Desktop, VS Code, Cursor, etc.)
Auth: Instance resolution follows a fallback chain: tool instance parameter → SN_AUTH_ALIAS env var. If the user says "on my myinstance instance", the AI passes instance: "myinstance". If no instance is mentioned, the env var is used. The connection manager in src/common/connection.ts resolves the alias to credentials via @servicenow/sdk-cli's credential store and caches instances per alias.

Directory Structure

src/
├── index.ts                 # Server entry point — creates McpServer, registers tools, starts stdio transport
├── tools/                   # MCP tool implementations (one file per tool or logical group)
│   └── execute-script.ts    # execute_script tool — runs JS via Scripts - Background
└── common/
    └── connection.ts        # ServiceNow connection manager — lazy-init ServiceNowInstance
dist/                        # Compiled JS output (gitignored)

Sibling Projects

Core library: ../nowsdk-ext-core (@sonisoft/now-sdk-ext-core)
CLI: ../nowsdk-ext-cli (@sonisoft/now-sdk-ext-cli)

The CLI is the reference implementation for how to use the core library. When adding new MCP tools, look at the corresponding CLI command in now-sdk-ext-cli/src/commands/ for the usage pattern.

Read the full file on GitHub · 149 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 149 lines · 2,236 tokens per session scan A 16a3057fd935

Subscribe to this mod's changes

now-sdk-ext-mcp CLAUDE.md is an instructions file published in the GitHub repository sonisoft-cnanda/now-sdk-ext-mcp (16 stars, last pushed 1mo ago), licensed MIT. It adds 2,236 tokens to every session, about $0.0089 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Backend and APIs Languages TypeScript ai claude mcp model-context-protocol servicenow

now-sdk-ext-mcp CLAUDE.md next to 6 instructions from other repositories
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now-sdk-ext-mcp CLAUDE.mdsonisoft-cnanda/now-sdk-ext-mcp	Instructions file	16	1mo ago	MIT	A	2,236	Claude Code
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vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
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now-sdk-ext-mcp: Instructions file for Claude Code